Bolognesi Alberto, Galeotti Francesco, Giovanella Umberto, Bertini Fabio, Yunus Sami
Istituto per lo Studio delle Macromolecole, CNR, Via E. Bassini 15, 20133 Milano, Italy.
Langmuir. 2009 May 5;25(9):5333-8. doi: 10.1021/la804139s.
The amphiphilic block copolymer formed by a hydrophobic body of polystyrene and a hydrophilic head of poly[9,9-di(2-(2-tetrahydropyranyl-oxy)hexyl)fluorene-alt-9,9-dioctylfluorene] was synthesized, and its solution was used to create thin films with ordered pattern of holes, by means of the breath figure technique. These porous films, after a thermal treatment, were found to show ordered aggregates of the pi-conjugated blocks in the place of the cavities. This is probably due to a preorganization of the two different blocks of the copolymer occurring during the breath figure formation, which is driven by the condensation of water microdroplets on the polymer solution, and to a following phase segregation occurring during the thermal annealing. This approach is a promising tool to be employed for the organization of organic materials at the micro and nanoscale.
合成了由聚苯乙烯疏水主体和聚[9,9-二(2-(2-四氢吡喃氧基)己基)芴-alt-9,9-二辛基芴]亲水头部形成的两亲性嵌段共聚物，并通过呼吸图案技术将其溶液用于制备具有有序孔图案的薄膜。这些多孔薄膜经过热处理后，发现在空洞处显示出π共轭嵌段的有序聚集体。这可能是由于在呼吸图案形成过程中，共聚物的两个不同嵌段发生了预组织，这是由聚合物溶液上的水微滴凝结驱动的，以及随后在热退火过程中发生的相分离。这种方法是一种很有前途的工具，可用于在微米和纳米尺度上组织有机材料。
